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GST 250/300 Knife Setting Jig

External knife setting jig engineered specifically for the ZERMA America GST 250/300 and Virtus Equipment GST 250/300 compact tangential granulators. The fixture enables technicians to pre-set and align rotor and stator knives to the correct offset angle outside the machine before installation, ensuring a precise drop-in fit that protects the open F-type tangential rotor from improper tool gap alignments. Four heavy-duty bolt brackets hold the ground knife at the optimal geometry for the 250mm rotor diameter and 300mm cutting chamber width configuration. Presetting blades on this jig during production significantly reduces knife change downtime.

SKU 25820110 Category Tags , , , , , , , ,

Description

The GST 250/300 Knife Setting Jig is a factory-specification external presetting fixture for the ZERMA America GST 250/300 and Virtus Equipment GST 250/300 compact tangential granulators. The GST 250/300 designation indicates a 250mm rotor diameter paired with a 300mm cutting chamber width. This series uses an open F-type tangential rotor design where precise knife gap alignment is critical to cutting performance and knife service life. Improper tool gap settings on a tangential rotor can cause premature knife wear or damage to the rotor, making external presetting with this dedicated jig an essential part of routine maintenance.

Additional information

Weight 17 lbs
Dimensions 12 × 6 × 2.5 in
Technical Specifications: SKU: 25820110 Compatible Rotor Diameter: 250mm Compatible Cutting Chamber Width: 300mm Rotor Type: F-type tangential open rotor Clamping Blocks: Four heavy-duty bolt brackets Material: Heavy-duty steel
Key Features: F-Type Rotor Compatibility: Designed for the open F-type tangential rotor geometry of the GST 250 series Four Heavy-Duty Bolt Brackets: Perimeter clamping blocks align knives at the correct offset angle for the 250mm rotor and 300mm chamber External Presetting: Calibrate knives outside the machine for fast drop-in installation during production Eliminates In-Machine Adjustments: Protects the rotor from misalignment damage during knife changes Reduced Maintenance Downtime: Pre-setting during production significantly shortens knife change turnaround
Applications: External knife presetting and calibration tool for the ZERMA America GST 250/300 and Virtus Equipment GST 250/300 compact tangential granulators. Essential for maintenance teams performing routine knife changes on GST 250/300 machines in plastic recycling facilities, injection molding operations, and size reduction environments where precise F-type rotor knife alignment is required.
Compatibility: GST 250/300 Compact Tangential Granulator (ZERMA America), GST 250/300 Compact Tangential Granulator (Virtus Equipment)
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